Raman scattering that occurs through the polarizability of a molecule, (not the hyperpolarizabilities) and is excited by
electromagnetic radiation that is in resonance with electronic transitions or vibronic transitions in the sample.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 762 (https://doi.org/10.1515/pac-2019-0203)